Hand-operated medicinal powder mixing and grinding cylinder for druggists&#39; use



' March 31. 1925,. 1,531,651

C. W. GEIGER HAND OPERATED MEDICINAL POWDER MIXING AND GRINDING CYLINDERFOR DRUGGISTS USE Filed July 21, 1925 I "if- E I 6' I mm a jx; 4 i

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fizvenior."

Patented Mar. 31, 1925.

UNITED STATES 1,531,651 ATENTorr c CLAUDE W. GEIGER, OF "DENVER,COLORADO.

HAND-OPERATED MEDICINAL -PO.WDER MIXING.AND GRINDING CYLINDER FORDRUGGISTS USE. i i

Application filed July 21, 1923. ..Seria1.No..;652,981

mixing and grinding ha-nd"operating cylinder that is adapted to quickly-mix and grind medicinal powders used to fill prescriptions and otherpurchases.

2 Second: To provide a mixing and grinding hand grasping andmanipulating cylinder, by means of which a druggist can mix differentkinds of medicinal powders into medicines, and also for grinding apowder or powders to a much finer mesh than they naturally occur in, asdesired.

I attain these objects by the mechanism illustrated in the accompanyingdrawings, in which:

Figure 1 is a perspective View of a hand operating powder mixingcylinder embodying my invention.

Fig. 2 is a longitudinal section through the center of the same, and

Fig. 3 illustrates a modification of the removable cap of the cylinder.

Similar letters refer to similar parts throughout the several views.

4 Referring to the drawings:

The numeral 1 designates a cylinder made of any suitable material,preferably a light weight material, like wood-fiber, celluloid, or hardrubber.

The cylinder represented in Figure 1 is a full size illustration of asize of cylinder best adapted to all around general usefor mixing andgrinding powders, but a smaller size and also a larger size can be usedfor special work. The cylinder is preferably provided with an integralbottom 2,and

the inner face of the cylinder wall is inwardly curved adjacent thebottom of the cylinder, in order to merge with the bottom, and thuseliminate an, angular corner at the bottom of the eylificer, as clearlyshown at 3. The cylinderislopenat its upper end, and an annular shoulder1 is formed on theinner face of the cylinder in the wall near the openend thereof, by reducing the thickness of the cylinderwall as shownat'5,from itsopen end to the point 'where it is "desired toform the saidshoul der't. "The cylinder is normally 'closedby acap or cover 6, therim 7 *0f which is formed with an annular recess 8 which is adapted toreceive the reduced end portion 5 'ofthe cylinder, the inner portion ofthe rim resting squarely upon-the shoulderd,

as shown; The inner face of "the rrim' :7 I o'fythe cap is-curved'tomerge with the flat 'e'nd portion thereof, to elimina'te anangularcornerin ithe said cap, and when the cap is placed upon thecylinder, the cylinder presents an unbroken interiorcylindricalsurf-ace, which merges at one end into the bottom, and at theother end into the cap, thus eliminating angular corners at each end of.the same, as Wlll be understood by reference to Figure 2. the cylinderare placedtwo or more metal Within balls 9, preferably steel balls, andthese balls have a smooth polished surface, and are of a size which Willinsure sufficient weight for the purpose intended. 'The radius of thecurve whichmerges the side wall and the end walls of the cylinder may beeither the same or slightly greater than that of the balls which areused, in order that the balls when rolled in the cylinder may engageevery part of the surface of the same.

In Figure 3 I have shown a slight modification in the arrangement of theopen end' of the cylinder and of the cap which fits over the same. Inthis arrangement the open end portion of the cylinder wall is reduced inthickness for a suitable distance, as shown at 10, to form a flatannular shoulder 11 in the outer surface of the said wall;

and a cap 12 is employed, the annular por- I tion of which iscorrespondingly reduced in thickness to form an annular shoulder 13which rests squarely on the rim of the cylinder, while squarely upon theannular shoulder 11 of the cylinder. The end wall of this cap is alsocurved to merge into the cylinder wall, as in Figure 3, to avoid anangular corner.-

In practice, the mater al to. mixed, rouiid or pulverized is pieced iiithe cyliin der and the cap is thefi pieced thereon.

the rim of the cap rests to roll rapidly around the cylinder and overthe material therein, which will result in quickly mixing andpulverizing the said material to the required degree of fineness. It isunderstood that uniform angular v movement of the cylinder in a definiteorbit could not accomplish the obiect of the invention for the reasonthat the balls would not or at least not rapidly travel over the surfaceof the cylinder. It is only by quick accelerations and retardations suchas a personcan carry out by intuition conscious of its effects, that theintended grinding action can be carried out. The relative motion of theballs over the surface of the cylinder is indicated to the personthrough the vibrations communicated through the sense of touch and theabsence of relative motion is indicated by the absence of suchvibrations. This is a matter of observation and experience with whichmost persons are familiar and which can be quicklyacquired by practice.As there are no angular surfaces in the cylinder, the material tobemixed and pulverized is always subject to the action of the balls, andthe mixing and pulverizing action is therefore 'quickly and eflicientlyaccomplished. The improved device is designed for the same purposes asthe Well known mortar and pestle commonly employed by druggists andchemists.

Having described my invention, what I claim as new and desire to secureby Letters Patent, is: v r

A method of mixing medicinal powders, which consists in confining theingredients to be mixed together with rolling bodies in a drum andmoving the drum by hand at varying rates and in such directions as toimpel by irregular centrifugal 3 action the bodies to rapidly roll overthe innersurface of the dru I I In testimony whereof I afiix mysignature 1n presence of two wltnesses.

I GLAUDEYJW. GEIGER. lVitnesses:

NETTIE L. Pom ELIZABETH SMITH. Y

